Goodwill And Other Intangibles (Schedule Of Change In Carry Amount Of Goodwill By Business Segment) (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 7,723	$ 6,734
Acquisitions	7,329	990
Foreign currency translation and other	(390)	(1)
Goodwill, ending balance	14,662	7,723
Automation Solutions [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	5,508	5,506
Acquisitions	40	0
Foreign currency translation and other	(292)	2
Goodwill, ending balance	5,256	5,508
Commercial & Residential Solutions [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	1,171	1,151
Acquisitions	0	23
Foreign currency translation and other	(91)	(3)
Goodwill, ending balance	1,080	1,171
Climate Technologies [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	753	730
Acquisitions	0	23
Foreign currency translation and other	(38)	0
Goodwill, ending balance	715	753
Tools & Home Products [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	418	421
Acquisitions	0	0
Foreign currency translation and other	(53)	(3)
Goodwill, ending balance	365	418
AspenTech [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	1,044	77
Acquisitions	7,289	967
Foreign currency translation and other	(7)	0
Goodwill, ending balance	$ 8,326	$ 1,044

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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